package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class ReportServiceImpl implements ReportService {

    @Autowired
    OrderMapper orderMapper;
    @Autowired
    WorkspaceService workspaceService;
    @Autowired
    UserMapper userMapper;

    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        List<Double> turnoverList = new ArrayList<>();
        dateList.add(begin);

        while (begin.isBefore(end)) {
            begin = begin.plusDays(1);
            dateList.add(begin);
        }

        for(LocalDate date : dateList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);
            Map map = new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover = orderMapper.sumByMap(map);
            turnover = turnover == null ? 0.0 : turnover;
            turnoverList.add(turnover);
        }


        return TurnoverReportVO
                .builder()
                .dateList(StringUtils.join(dateList,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();

    }

    @Override
    public UserReportVO userStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (begin.isBefore(end)) {
            begin = begin.plusDays(1);
            dateList.add(begin);
        }

        List<Integer> newUserList = new ArrayList<>();
        List<Integer> totalUserList = new ArrayList<>();
        for(LocalDate date : dateList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);
            Map map = new HashMap();
            map.put("end",endTime);
            Integer totalUser = userMapper.contByMap(map);
            totalUserList.add(totalUser);
            map.put("begin",beginTime);
            Integer newUser = userMapper.contByMap(map);
            newUserList.add(newUser);
        }

       return UserReportVO.builder()
               .dateList(StringUtils.join(dateList,","))
               .newUserList(StringUtils.join(newUserList,","))
               .totalUserList(StringUtils.join(totalUserList,","))
               .build();


    }

    @Override
    public OrderReportVO orderStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (begin.isBefore(end)) {
            begin = begin.plusDays(1);
            dateList.add(begin);
        }

        List<Integer> orderCountList = new ArrayList<>();
        List<Integer> validOrderCountList = new ArrayList<>();
        for(LocalDate date : dateList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);
            Map map = new HashMap();
            map.put("end",endTime);
            map.put("begin",beginTime);
            Integer orderCount = orderMapper.OrderContByMap(map);
            orderCountList.add(orderCount);
            map.put("status",Orders.COMPLETED);
            Integer validOrderCount = orderMapper.OrderContByMap(map);
            validOrderCountList.add(validOrderCount);
        }

        Integer totalOrderCount = orderCountList.stream().reduce(Integer::sum).get();
        Integer validOrderCount = validOrderCountList.stream().reduce(Integer::sum).get();

        Double orderCompletionRate = 0.0;
        if(totalOrderCount != 0) {
            orderCompletionRate =  validOrderCount.doubleValue() / totalOrderCount;
        }

        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();

    }

    @Override
    public SalesTop10ReportVO top10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end,LocalTime.MAX);

        Map map = new HashMap();
        map.put("begin",beginTime);
        map.put("end",endTime);
        List<GoodsSalesDTO> goodsSales = orderMapper.getGoodsSales(map);
        List<String> name = goodsSales.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        List<Integer> sales = goodsSales.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());

        String namevo = StringUtils.join(name, ",");
        String numbervo = StringUtils.join(sales, ",");
        return SalesTop10ReportVO.builder()
                .nameList(namevo)
                .numberList(numbervo)
                .build();

    }

    /**
     * 导出运营数据
     * @param response
     */
    public void exportBusinessDate(HttpServletResponse response) {
        //查数据
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);
        BusinessDataVO businessDataVO = workspaceService.getBusinessData(LocalDateTime.of(dateBegin,LocalTime.MIN),LocalDateTime.of(dateEnd,LocalTime.MIN));

        //读取-写入
        InputStream in = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");
        try {
            XSSFWorkbook excel = new XSSFWorkbook(in);
            XSSFSheet sheet1 = excel.getSheet("Sheet1");
            //填充数据-时间
            sheet1.getRow(1).getCell(1).setCellValue("时间" + dateBegin + "至" + dateEnd);
            //填充数据-第四行
            XSSFRow row = sheet1.getRow(3);
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());
            //第五行
            row = sheet1.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            for(int i = 0; i < 30; i++){
                LocalDate date = dateBegin.plusDays(i);
                LocalDateTime begin = LocalDateTime.of(date, LocalTime.MIN);
                LocalDateTime end = LocalDateTime.of(date, LocalTime.MAX);
                BusinessDataVO businessData = workspaceService.getBusinessData(begin, end);

                row = sheet1.getRow(i + 7);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }

            //输出流
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);

            //关闭资源
            out.close();
            excel.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }


    }


}
